What is mirror site?

A mirror site is a website or set of files that is an exact copy of another site. Mirror sites are typically used to provide a backup of the original site in case of downtime or to distribute the load of a popular site by providing additional locations for users to access the same content.

Mirror sites can be located in different geographic locations and can be maintained by the original site owner or by volunteers. They can be used to increase the availability and speed of access to a website by reducing the distance that data has to travel, and also to overcome censorship or network congestion.

Mirror sites can be setup for a variety of different purposes, such as for software downloads, for security and backup, for geographical or political reasons, or for website promotion.

Mirror sites are usually duplicate versions of the main website. It is used to increase traffic and website ranking. Google can easily detect and penalize duplicate content. Every search engine prefers original content rather than duplicate or mirror sites.